Actually, I think "Antifragile" is linked to GTD. The whole point of GTD is to keep your personal system from being fragile - from crashing when it is subjected to the various inputs that hit it.
Originally Posted by H@ns
Taleb's point is that some things are fragile, and some the opposite of fragile, which he calls "antifragile". The human body can be fragile but in some cases - such as exercise causing damage which results in muscle growth, or a vaccine of some kind introducing a small amount of disease designed to force the body to react and strengthen its defenses against that disease - it is antifragile.
I don't know that GTD would make your system antifragile - that it would grow stronger as it handles various inputs, but it is certainly designed to make it robust - something that will not break no matter how hard it is hit.
Though I doubt I'm good enough at GTD to really say. Maybe a personal management system using GTD does get stronger as it is tested. I'm certainly getting better at handling things that hit me without having a meltdown...